Rotary engine.



S. E. ROSE. ROTARY ENGINE. APPLICATION FILED MAY 18,1912.

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S. E. ROSE.

ROTARY ENGINE. 7 APPLICATION FILED KAY 1B, 1912.

,241 Patented .25, 1914,

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SOLON E. ROSE, OF DETROIT, MICHIGAN.

ROTARY ENGINE.

Specification of Letters Patent.

Application filed May 18, 1912.

Patented Aug. 25, 1914. Serial No. 698,226.

To all whom it may concern:

Be it lmown that I, SoLoN E. Rose, a citi Zen of the United States, residing at 13 Joy street, Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in Rotary Engines, of which the following is a specification.

My invention relates to rotary engines and has for its object to provide, in this type of engine, a balanced rotor. In this type of engine, it has been found that, owing to the fact that during a portion of the time the steam or other motive fluid exerts a non-rotative pressure acting transversely to the supporting shaft, there is a wasteful absorption of energy in frictional pressures, leakage of operating fluid, and unnecessary wear of parts. To overcome these difficulties I provide, by means of the arrangements described in the accompanying specification and shown in the drawings, a rotor which is balanced by'countervailing pressures on separate and opposed surfaces thereof.

By my invention, that pressure on any given rotor surface, which is radial to the axis of the rotor and therefore non-rotative in effect is opposed and balanced by an equal and similarly directed pressure acting in the opposite direction and on substantially the same radial plane.

Referring to the drawings: Figure 1 is a longitudinal vertical section of the engine; Fig. 2 is a transverse section on the plane A-A of Fig. 1; Fig. 3 is a longitudinal vertical section of a modified form; Fig. 4. is a transverse section on the plane BB of Fig. 3; and Fig. 5 shows a special construction of piston.

As shown in Fig. 1, the engine may be supported on standards, 2, 3. Rigidly supported in the standard 2 is a head 4: which, with a corresponding head 5 and two semicylindrical portions 6, constitute the casing of the engine. Rigidly supported within an opening in the head 4 is a fixed shaft 7 in tegral with and extending from a fixed stationary cylinder 8. 14 is a shaft extending on the opposite side of the cylinder 8, this cylinder being eccentrically mounted with reference to the rotor which surrounds it. The rotor comprises a hollow cylindrical portion 9 having integral therewith and at one end a head 10 to which head 10 is secured the driving-shaft 11. At the other end of the rotoris a circular head 12 secured to the portion 9 in any suitable manner as by bolts l3, l3. Surrounding the rotor, and

eccentric thereto, is the casing 6, this casing and the cylinder 8 together forming a stationary abutment. The rotor 9 carries at opposite sides thereof longitudinal piston blades 15, 15; 16, 16, arranged to be reciprocated by any suitable mechanism, which, for convenience of illustration, is here shown as a spring within the rotor body for forcing the piston blades outward, the walls of the chamber serving to force such blades inwardly. As will appear more clearly from Fig. 2, the pistons 15, 15 extend outwardly into an eccentrically-shaped chamber 17, while the pistons 16, 16 extend inwardly into an eccentrically-shaped chamber 18. These two chambers are connected by ports or passages 19, 19 and 20, 20, so that these chambers are in constant communication with each other. The non-rotative or radial pressures of the motive fluid are therefore exerted on separate and opposed surfaces of the rotor. As the outer and inner cylindrical surfaces of the rotor are of different diameter, it is necessary, in order to secure equilibrium of such non-rotative pressures that the inner surface of the rotor forming the outer wall of the chamber 18 should be of greater area than that of the outer surface within the chamber 17, so that these inner and outer surfaces may have substantially the same area. This result is obtained by making the chamber 18 of greater length than the chamber 17. Packing rings 21 and 22 are provided on the outer surface of the rotor to prevent leakage of steam between this surface and the wall of the chamber.

The head 10 of the rotor has within it a cylindrical bearing for the shaft 14 which extends thereinto; the shaft 11 of the rotor being mounted in suitable bearings on the standard 3.

Referring to Fig. 2, 23 is the port for admitting pressure fluid, which is controlled by a valve 24 of any suitable construction. 25 is the exhaust port.

Referring now to Fig. 3, a modified form of rotor construction is shown. 26 is the shaft of the engine to which is secured the rotor 27 consisting of a main cylindrical portion 28 having integral therewith a head portion 29 and an inwardly-extending cylindrical portion 30. 31 is the opposite head of the rotor secured to the body 28 by bolts or pins 32 and having an inwardly-extending cylindrical portion 33, Mounted in the body portion 28 of the rotor are piston blades 3 these piston blades extending outwardly into a fluid pressure chamber formed between the body 28 and an eccentric shell 39 supported by the stationary casing 40. The inwardly-extending portions 30, of the rotor have mounted therein piston blades ill, all and 4:2, 452. llhe shell 39 is carried by an. annular support if; which is, in turn, carried by the casiijic', the shell and casing in this instance forming a stationary abutment. The annular support l-8 forms the end of the chambers within which the pistons all, ll and *2, 19. rotate. and 46 are packing rings between the ends of tl e rotor members 30, 33 and the annular abutment support elf-3. By this arrangement, it will be noted that the rotor is again provided with two separate and opposed surfaces of substantially the san'ie area, so that, in this case also, the rotor is balanced, as far nonrotatire pressures are concerned, the outer surface of the body portion 28 having an area etpial to the sum of the areas of the interior surfaces of the inwardly-extending Steam 1s adcylimlrical portions 230 and mitted by pipe (30 to the inner piston chamber through a port ll and to the outer piston chambers through ports ll), 50, these ports being each of them, at all times, in com mui'iication with their respective chambers, so that the same fluid pressures will exist in each of the three chambers. The ad mission of steam to these ports is controlled by a valve, not shown, which may be of any suitable construction and controlled by any suitable mechanism which may be connected to a rotating part of the engine. The steam is exhausted through pipe '70 by a similarly arranged system of ports, as shown to the left of Fig. 4-.

"Hahn-ring to Fig. 5, a special. form of piston-blade is shown. This blade 51 is curved. instead of flat and is arranged to reciprocate in a. correspondingly curved path by any suitable mechanism. It hasbecn found that piston blades of this shape more efficiently utilize the yn'cssure than the flat blades heretofore used. llhis is particularly the case when tllecnginc is used as an internal combustion engine.

v o n lVlnlethe engine as shown is primarily designed for the use of pressure fluid, such as steam, compressed air, etc., it may be readily adapted for useas an internal cornbustion engine.

I claim 1. in a rotary engine, a rotor having separate and opposed pressure surfaces of substantially equal area, non-rotative elements having corresponding pressure surfaces, such sets of surfaces arranged to form between them closed pressure chambers, means for admitting the pressure fluid at the same pressure into each chamber, and pistons carried by said rotor and extending into said chaml; '3, whereby the pressure surfaces of the rotor ar subjected tosubstantially equal countervailing pressures.

$2.. in a rotary engine, a rotor having eon care and conlex pressure surfaces of substantially equal area, non-rotative elements having corresponding surfaces, such sets of surfaces arranged to form between them closed pressure chambers, means for adinitting the pr ssure fluid at the same pressure to each chamber, and pistons carried by said rotor and extending into said chambers, wn-creby the pressure surfaces of the rotor are subjected to substantially equal countel-railing pressures.

3. la a rotary engine, a rotor having separate and opposed pressure surfaces of substantially equal area and having sliding pistons mounted therein, said pistons extending into eccentric chambers in open comnnmication with each other, said chambers being formed between said rotor and fixed portions of the engine, whereby the pistons rotating with the movingparts uncover sub stantially equal pressure surfaces on the rotative parts.

4. In a rotary engine, a cylinder, heads secured to the ends of the cylinder. a power shaft journaled through the :heads of the c dinders, a rotatable piston carrier secured to the shaft and provided with piston guideways, a piston slidably mounted in each guidruray, eccentric chambers .into which said pistons extend, said chambers connected together at thepoint of exhaust by passage ports, wl'icreby parts of each chamber are at all times in communication one with the other and subject to substantially equal pressures.

In testimonywhereof l. aillixmy signature in presence of two witnesses.

SOLON E. :ROSE.

liitnesses J. H. 'BRIGKENSTEIN, Josnrn W. Harms.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Ratents, Washington, "D. O. 

